chore(backlog): 记录 g57 完成

.ua/backlog.json

@@ -812,6 +812,14 @@
       "acceptance": "cmdStyle 增加 sizeCheckFile：只约束分层包 src 内实现文件、types.ts 与 index.ts 豁免；正向全绿、负向（造 210 行文件）退出码 1；AGENTS/CODING/README 同步该门禁说明；npm run check 全绿",
       "status": "done",
       "notes": "自补：工具链改进；只约束包内实现文件，cli 自身与 demo 单文件不受限"
+    },
+    {
+      "id": "g57",
+      "title": "form 校验支持异步规则（validator 返回 Promise）",
+      "motivation": "邀请码占用、用户名唯一性这类校验必须打后端；原来 validator 只接受同步返回值，调用方只能绕过 form 自己写提交拦截",
+      "acceptance": "FormRule.validator 允许返回 Promise；formItem 返回 validateAsync 并按轮次丢弃过期结论；form 提交逐项 await、期间禁用提交按钮、有错聚焦首错；同步 validate 行为不变；demo 增异步字段；npm run check 全绿",
+      "status": "done",
+      "notes": "自补：既有组件增强；同步路径不被 Promise 拖慢，异步路径防乱序覆盖"
     }
   ]
 }

.ua/iterations.log

@@ -101,3 +101,4 @@
 {"ts":"2026-10-26T12:18:24+08:00","id":"g54","result":"done","commit":"818e20e","summary":"新增 watermark：canvas 平铺单元+令牌色解析+多行旋转间距可配+覆盖层交互穿透，组件数 52→53"}
 {"ts":"2026-10-26T12:19:23+08:00","id":"g55","result":"done","commit":"e54fdb6","summary":"新增 checkboxGroup：数组信号+min/max 禁用边界+checkAll 半选+纵横向，组件数 53→54"}
 {"ts":"2026-10-26T12:20:34+08:00","id":"g56","result":"done","commit":"e6bf801","summary":"ua style 新增单文件 200 行门禁（分层包 src 实现文件，types/index 豁免），CODING 约定变可执行检查"}
+{"ts":"2026-10-26T12:22:13+08:00","id":"g57","result":"done","commit":"fcec391","summary":"form 校验支持异步规则：validator 可返回 Promise，formItem 新增 validateAsync 并按轮次丢弃过期结论，提交期间禁用按钮"}